B: México and the United States share the southern border
The pesticide will be in the animals that eat the grasshoppers, in the water table, in humans that eat the animals/crops and drink the water.
As a result of the geographic location of the region, virtually all Caribbean economies are susceptible to the dangerous forces of nature.
Everything in Earth's<span> system can be placed into one of </span>four major<span> subsystems: land, water, living things, or air. These </span>four<span> subsystems are called "</span>spheres<span>." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).</span>
The answer is: waterfalls can usually be found wherever there is lots of erosion or where there is steepness in the river's channel.